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The 'Common Quaker' (''Orthosia cerasi'') is a moth of the family Noctuidae. Some authors prefer the synonym ''Orthosia stabilis'' (Denis & Schiffermüller 1775). It is distributed throughout Europe.
This is a variable species, the ground colour of the forewings ranging from greyish to orangey brown, sometimes with a broad dark band. The most distinctive features are two large stigmata, each edged by a narrow pale line, with a similarly coloured subterminal line. The hindwings are drab grey or brown. The wingspan is 34-40 mm. This moth flies at night in March and April and is attracted to light and sugar.
The larva is bright green with yellow markings and feeds on various trees and shrubs including apple, buckthorn, elm, oak, pear, poplar and willow as well as various ''Prunus'' species. The species overwinters as a pupa.
# ''The flight season refers to the British Isles. This may vary in other parts of the range.''

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References

References

★ 'Chinery, Michael' ''Collins Guide to the Insects of Britain and Western Europe'' 1986 (Reprinted 1991)

★ 'Skinner, Bernard' ''Colour Identification Guide to Moths of the British Isles'' 1984